You will get a senior frontend engineer on a monthly retainer for VC/YC startups
Project details
Senior Frontend Retainer: Ship consistently with a senior frontend engineer focused on real-time systems, scalable architecture, and fast product iteration. Experience includes enterprise platforms like Scotiabank and Walmart, plus Web3 dashboards and validator monitoring desktop apps.
What's Included
1. Feature Development & Maintenance
• Dashboards & internal tools
• Onboarding flows & product features
• Web & mobile UI (Next.js / React / React Native)
• Refactors & structural improvements
2. Backend & API Integration
• REST & GraphQL
• WebSockets & real-time systems
• Auth, payments & smart contracts
• Data pipelines & caching strategies
3. UI/UX & Performance
• Pixel-perfect implementation from design
• Design system architecture
• Core Web Vitals optimization
• State management & scalability cleanup
• Or anything feasible within frontend/UI scope.
How It Works
• Flexible monthly hours for roadmap priorities.
• Priority execution with faster turnaround.
• Close collaboration with product and backend teams.
• Monthly reports on shipped features and next priorities.
What's Included
1. Feature Development & Maintenance
• Dashboards & internal tools
• Onboarding flows & product features
• Web & mobile UI (Next.js / React / React Native)
• Refactors & structural improvements
2. Backend & API Integration
• REST & GraphQL
• WebSockets & real-time systems
• Auth, payments & smart contracts
• Data pipelines & caching strategies
3. UI/UX & Performance
• Pixel-perfect implementation from design
• Design system architecture
• Core Web Vitals optimization
• State management & scalability cleanup
• Or anything feasible within frontend/UI scope.
How It Works
• Flexible monthly hours for roadmap priorities.
• Priority execution with faster turnaround.
• Close collaboration with product and backend teams.
• Monthly reports on shipped features and next priorities.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, DesignWhat's included $5,000
These options are included with the project scope.
$5,000
- Delivery Time 30 days
- Number of Revisions 3
- Design Customization
- Content Upload
- Responsive Design
- Source Code
Frequently asked questions
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MA
Moe A.
Mar 7, 2026
Build a Simple Server-Side API Integration for a Web Tool (Node.js / Vercel)
Working with this freelancer was a genuinely great experience from start to finish. They came in on a complex, multi-layered project and got up to speed fast without a lot of hand-holding.
Communication was clear, response times were solid, and they consistently delivered quality work that matched what we discussed.
What stood out most was their ability to think through problems, not just execute tasks. When something needed adjusting or a better approach existed, they flagged it proactively rather than waiting to be told. That kind of initiative makes a real difference when you’re building something from the ground up.
I plan to continue working with them and would not hesitate to recommend them to anyone looking for a reliable, sharp freelancer who takes their work seriously. Five stars without question.
Communication was clear, response times were solid, and they consistently delivered quality work that matched what we discussed.
What stood out most was their ability to think through problems, not just execute tasks. When something needed adjusting or a better approach existed, they flagged it proactively rather than waiting to be told. That kind of initiative makes a real difference when you’re building something from the ground up.
I plan to continue working with them and would not hesitate to recommend them to anyone looking for a reliable, sharp freelancer who takes their work seriously. Five stars without question.
About Denny
Senior Fullstack Developer
San Miguel, El Salvador - 10:37 pm local time
Steps for completing your project
After purchasing the project, send requirements so Denny can start the project.
Delivery time starts when Denny receives requirements from you.
Denny works on your project following the steps below.
Revisions may occur after the delivery date.
Project kickoff + Scope alignment
We review goals, product context, tech stack, and define priorities for the allocated hours.
Execution + Development
Start working on features after a quick on-boarding with implement features, any integration, bug fixes, or improvements